What is the main purpose of a groundnut digger-cum-shaker?
C
Lifting groundnut plants and shaking off soil
Analysis & Theory
It lifts the groundnut plants from the soil and shakes off attached soil.
Windrowers are used to:
C
Arrange cut or dug crops into rows
Analysis & Theory
Windrowers place the harvested crop in rows (windrows) for drying and easy collection.
Which component in the digger-cum-shaker lifts the groundnut plants?
Analysis & Theory
The blade or share enters the soil and lifts the plant with pods attached.
What role does the shaker mechanism play in a digger-cum-shaker?
C
Removes attached soil from roots
Analysis & Theory
Shaker removes soil from roots to reduce post-harvest cleaning.
Windrowing helps in which of the following post-harvest processes?
B
Drying and manual collection
Analysis & Theory
Windrows allow better exposure to sun and ease of gathering.
Groundnut digger-cum-shaker reduces the need for:
B
Manual digging and cleaning
Analysis & Theory
It automates lifting and cleaning, reducing manual labor.
Improper depth setting in a digger may result in:
A
Excess fuel consumption
B
Pod loss or incomplete lifting
Analysis & Theory
Too shallow or too deep digging may damage pods or miss them.
Which power source is commonly used for groundnut digger-cum-shaker?
Analysis & Theory
The shaker and digging unit are usually powered by a tractor's PTO.
Which of the following is **not** a benefit of windrowing?
B
Facilitates mechanical collection
D
Ensures uniform sun exposure
Analysis & Theory
Windrowing is not primarily used for weed control.
Why is timely windrowing important for groundnut?
A
To enhance seed germination
C
To prevent fungal growth and pod rotting
D
To increase nitrogen fixation
Analysis & Theory
Delays in drying can lead to spoilage due to moisture.
Which implement follows a digger-cum-shaker in the harvesting sequence?
B
Threshing unit or picker
Analysis & Theory
After shaking and drying, threshing separates pods from vines.
What type of soil is most suitable for groundnut harvesting with a digger-cum-shaker?
Analysis & Theory
Sandy loam is easy to penetrate and shake without pod loss.
Which factor most affects the performance of a groundnut digger?
Analysis & Theory
Moist soil is harder to shake clean; dry soil breaks off easily.
The working width of a tractor-mounted groundnut digger is typically:
Analysis & Theory
Most groundnut diggers have a working width of around 1 to 1.5 meters.
The **primary loss** in groundnut digging is due to:
B
Pod detachment and left in soil
Analysis & Theory
Pods that break off and remain in the soil account for most loss.
What is the typical field efficiency of a tractor-operated groundnut digger?
Analysis & Theory
Well-maintained diggers can reach up to 70% field efficiency depending on conditions.
The **vibration mechanism** in a digger-cum-shaker helps in:
C
Removing soil from roots
Analysis & Theory
Vibrations loosen soil from the roots for clean harvesting.
Which part of the windrower arranges the plants into rows?
Analysis & Theory
This unit arranges the harvested material into windrows.
A major **limitation** of groundnut windrowing in humid areas is:
C
Fungal growth due to slow drying
Analysis & Theory
In high humidity, windrows may not dry properly, leading to spoilage.
Which of the following practices **reduces pod loss** during harvesting?
A
Harvesting during rainy season
B
Increasing digging depth
D
Delaying harvest by 20 days
Analysis & Theory
Correct digging depth ensures pods are not cut off or left behind.